Mining machine



Aug. 29, 1933. M y P HQLMES 1,924,552

MINING MACHINE Filed 001". 12, 1951 /r/ :ff/r Tof? Norm/s P. H01. mss. "Y /4- Mm PatentedvAug. 29, 1933Y Y l UNITED QPF-ICE m m .V1-,924,552 m m l MIN'INGMAGHIN l Morrsll. Holmes, `Clarelnont, N.',H., assigner to Y 'Sullivan Machinery Company,` 'alcorporation of 'Massachusetts i v u f l Amlication of;9015er@1,2,"1931;fffseiiaiiagseasoe;iff e T e l m 16 claims. (cieca-28) H e This invention relates'toimining machines and two parts heldjtogetherbyfboltsjand journaled `v l more particularly hasreferenceto improvements vwithin 1this bracketin bearing sleeves A14, 14 in cutter bar swinging mechanisms vforsuch maa` shaft V15 arranged -withiits axis perpendicular Y chines.; l f .Y Tof the planeof thecutt'erbarasshownin FigfZqr: i m `5 An .object `of this inventionv `is toprovide jan" Formed -`integral )vith'this' 'shaft risanv actuatingf'O j f improved cutter bar yswinging mechanism fora element', herein a' chain fspro'cket 16 -whichencoal mining machine. lAnother object is to pro-v gages afexibleele'ment;hereinin the form of a .vide an improved cuttervbar swinging'mechanism `chainl 1-'71 4This chain functions as a rack and of thepmanually operabletype. Afurthenobl passes raround the exterior periphery ofthe circuject is to provide animproved Acutter bar swing lar frame 13.and is attached at 18, 18'at its ends to. 65.

-15 fiever, more fully appear.`

'ing mechanism of the .manually operable type "the machine frame. Suitable means is exnply'cyedV 4whereby the cut-ter bar may be'manually swung 'for controlling rotation' of i the shaft 15,v and in inV either of opposite directions jiny an'improved this instance comprises a ratchet wheel 19 keyed manner.- These and other vobjects wi11, how- Hat` 20 to the shaft 15.1? Engageable withvtheteeth v Infthexaccompanied drawing there is shown for otally mounted on apin`22 `fixed atf23 tothe 'purpose' ofi-illustration one formwhich the inf flanges-12 offthe bracket' .'11. f. Thispawlis YVrevention mayassume in practice; versibleand:swingable'intof'its diierent'positions iY In 'this'drawingz about the pin 22'and s o-heldl by a springfpressed z' Fig;`1 'is a siderelevationalview of a coal mining u plunger lool; *2 4 mounted within aI bore `25 form'ed 7.5

r 25 `tially on' line 2-2 of Fig` 1.? -1.

machine 'having embodied therein .the illustra# in thepawl andengageable withja attenedjsurtive form of the i proved. lcutter "bar swinging face 26 on the'pin 22. The outer-'endofrthe shaft mechanism.. Y n Y r 115 is formed. polygonal in cross section at27 de- 1 Fig. `2 isa detailsectional viewtaken substantachably tofreceive a suitable turninginstrument forfthe shaft,herein a usual ratchetwrenchg-orlSO Q Figs. 3 and "4 are detailsectionalviews taken rlever. 28. Asy shown in Fig`.3','the-braeket 11 i substantially on lines 3-3 and 4 4 respectively, providedl with' a recess29`;togreceive..the ratche t ./fpiglf Y; f- 1 l. *wheelg19- andproyided with "curvedsurfaces vInthis 'illustrative'.constructionthe improved `30, 30 fOl,` guiding the'clhan 1'7-' relatiiet0 the bar swinging mechanism Vgenerally designated 1 chainjsprocket- `-16 fin, the manner showninf Fig;jf4`. 8 5 t 435 The coal mining machine shown herein is of the travel along thel chain rack' 17, ,therebyfmoving is shown embodied in a coal mining-machine 2 It will thus'be seen that. asthe operatorgrasps' i of the flexibly fed, continuous cutt'er'type althe ratchet lever 28 and :swingsthesamefbackjp though,` it will be understood,` that the same may V and`fort h,the lshagfjzvil is rotated,rro ta'ting therebe embodied in machines of various other types. withthe `sprocket 16 andausing-thelatterfto Vstrip or open pit 4type and comprises a frame therewith the cutter bar.,V VThe pawl 21 engagingA 3 ymounted'ona skid v4 forsliding movement over the teeth of the lratchet`wl'1eel{19'a1;` this time; the surface ofI the material t0be cut. Themaf 'prevents Vreverse'rotation of 1-the shaft land', as l'a chine is fed bymeans of usual iiexible feeding result, thecutter bar isgswungfdownwardly,iniitS .i i v 40 means including a flexible feeding element 5A vplane fromlthe upper `dotte'dflineposition showx'r95,` which engages a 'rotatable power driven feeding in Fig. `1.. to V:thezfull line DOSitOD Virl thatgu f 4e1ement6 on the machine. Pivotally mounted `The cutterbarmaybeswung inlth.0ppositfey die at? onA the machine frame for swingirgmoverectionv simply by `shifting thpawl 221511150; 355,1 vment in a Vertical plane"relative'tthereto is a `reversepositionandi reversing theratchetflever cutterbar 8 carrying on its margin forr circula- 28 on Athe shaft 15; Ih vpiwllzlafvlts sfarlofk I l tion thereabout a usual `cutterbit cutter carrying andgholds the cutter bar inthe fulljlin'e position' Now referringto the' improvedbar swinging. :it is evidentV that the paWLmay holdv the bar, in 1 -mechanism, it will be noted'thatfseeured 4to any desired positionjabout its pivot.

59 the hanger-1o of the cutter bar a is etracker' 11H 'As a result ofthis inventiona wiumbe `noted 125. l

. having la `iiange 12-Y1ying adjacent the circularv `that an improvedbar swinging mechanism is pro.- Y cutter head 1U3of themachine and formingbear-Y"videdffora c'QaLminingjmac'hine Wherebythe Y ing means cooperating with the circular'head in cutter bar maybe swung in an limproved'manner; the guiding ofthe Vcutter'bar during its lswinging Itgwill further be notedthat the ir'nproy'ed:01113261"V g ,'xnovement.'r "Ihislbracket is k herein composed QfV barfgswingingj mechanismffisof ai simple and 119 chain passing about the arcuate guide ange on said frame and xed at its ends to'said frame,

said chain passing through said chamber-in engagement with said sprocket, and means for rotating said shaft to effect travel of said sprocket along said chain to swing said cutter barand for locking said shaft in its adjusted position.

13. In a mining machine the combination with a machine frame and a kerf cutter pivotally mounted thereon, of mechanism for swinging and guiding said'kerf cutter including bearing means formed on said kerf cutter and cooperating with an arcuate guide on the machine frame, a sprocket journaled within said bearing means, and a chain passing around said arcuate guide and attached at its ends to said frame, said sprocket engaging said chain and rotatable to eiect travel thereof along said chain thereby to swing the kerf cutter.

14. In a mining machine, the combination with a machine frame and aV kerf cutter Y pivotally mounted thereon, of mechanism for swinging and guiding said kerf cutter including bearing means formed on said kerf cutter and cooperating with an arcuate guide on the machine frame,l a sprocket journaled within said bearing means, and a chain passing around said. arcuate guide and attached at its ends to said frame, `said sprocket engaging said chain androtatablelto effect travel thereof along said chainvthereby to swingthe kerf cutter, said bearing meanshavguiding said kerf cutter including a bearing means formed on saidkerf cutter and cooperating with y n i3 ing guiding surfaces with which said chain' en-` gages toguide the latter relative'to said sprocket.'

15. In a mining machine, the combination withl n an arcuate guide on the machine frame, a horizontal shaft jrournaled within Vsaid bearing means, a sprocket fixed to said shaft, aexible chain passing around the arcuate guide on said frame and xed at its ends to said framegsaid sprocketY 1 engaging said chain, and means for rotating saidV shaft to effect travel of said sprocket-along said. i

chain to swing the kerf cutterr and forlocking said shaft to hold said kerf cutter in its adjusted position. Y

16. In a mining machine, the combination with a machine frame and a kerf cutter pivotally mounted thereon, of mechanism forswinging said kerf cutter relative to said frame including bear-v ing means rigidly fixed to said kerf cutter, a rotatable actuating element j ournaled within said bearing means, an arcuate rack element on said frame, said actuating element engaging said rack element and rotatable to effect travel thereof along'- said rack element thereby to swing the kerf cutter, l,and means associated with said actuating elef ment for holding the latter against rotation to,`

its adjusted position.

lock the kerf cutter in Y MORRIS P. HOLMES. 

